MIC5301-1.5YD5 TR Micrel Inc, MIC5301-1.5YD5 TR Datasheet - Page 9

• Manufacturer Part Number: MIC5301-1.5YD5 TR
• Description: 150mA Single LDO Thin SOT-23-5 ( )
• Manufacturer: Micrel Inc

Specifications of MIC5301-1.5YD5 TR

• Regulator Topology: Positive Fixed
• Voltage - Output: 1.5V
• Voltage - Input: 2.3 ~ 5.5 V
• Voltage - Dropout (typical): 0.04V @ 150mA
• Number Of Regulators: 1
• Current - Output: 150mA
• Current - Limit (min): 275mA
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: TSOT-23-5, TSOT-5, TSOP-5
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 576-1858-2; MIC5301-1.5YD5TR; MIC5301-1.5YD5TR

April 2008
To determine the maximum ambient operating
temperature of the package, use the junction-to-
ambient thermal resistance of the device and the
following basic equation:
T
the die θ
The table below shows junction-to-ambient thermal
resistance for the MIC5301 in the 6-pin 1.6mm x
1.6mm MLF
Substituting P
operating
operating conditions for the regulator circuit. The
junction-to-ambient
minimum footprint is 100°C/W.
6-Pin 1.6x1.6 MLF
J(max)
6-Pin 1.6x1.6
Thin MLF
Package
= 125°C, the maximum junction temperature of
P
JA
D(MAX)
thermal resistance = 100°C/W.
temperature
®
®
package.
D
for P
Thermal Resistance
=
®
⎝
⎛
D(max)
thermal
T
J(MAX)
and solving for the ambient
will
JA
Minimum Footprint
θ
JA
- T
Recommended
give
resistance
A
100°C/W
100°C/W
the
maximum
for
the
9
The maximum power dissipation must not be
exceeded for proper operation.
For example, when operating the MIC5301-2.8YML at
an input voltage of 5V and 150mA load with a
minimum footprint layout, the maximum ambient
operating temperature T
follows:
Therefore, a 2.8V application with 150mA of output
current can accept an ambient operating temperature
of 92°C in a 1.6mm x 1.6mm MLF
discussion of heat sinking and thermal effects on
voltage regulators, refer to the “Regulator Thermals”
section of Micrel’s Designing with Low-Dropout
Voltage Regulators handbook. This information can
be found on Micrel's website at:
http://www.micrel.com/_PDF/other/LDOBk_ds.pdf
0.33W = (125°C – T
T
A
=92°C
A
A
)/(100°C/W)
can be determined as
®
package. For a full
M9999-042108